LOUISVILLE, Ky. (WDRB) -- On Thursday morning, a local father returned from a national television taping of the Dr. Phil Show, where he sat face-to-face with the teen he believes killed his son.

Terry Zwicker walked out of the terminal at the Louisville International Airport Thursday morning, saying he went to Los Angeles to do a job for his son, Trey Zwicker, who was savagely beaten and left for dead behind a Louisville high school in 2011.

Zwicker sat across from Trey's step-brother, Josh Young, who was acquitted of the murder in August. Terry Zwicker is contractually bound not to reveal what happened, but he did say emotions boiled over, with lots of tears, lots of swearing, and he said he "exploded inside" as Josh Young repeatedly refused Dr. Phil's offers to get him help.

He says he went on the show looking for answers -- the truth about what happened to his son. It's a story that has been filled with twists and turns and lies all along the way. Some family members said first, Josh Young confessed to them about killing Trey Zwicker. Then his father, Joshua Gouker, went before a judge and said it was a cover-up, and he killed the 14-year-old boy.

"His mother killed a couple of mine, and it just felt right," Joshua Gouker told authorities. "I know it sounds monstrous and [EXPLETIVE], but it's not. If we were in the Old Testament, it would be the same thing."

Gouker has since filed an appeal in an attempt to overturn his life sentence.

"I've never seen a bunch of the stupidest people," Terry Zwicker said. "He's not going nowhere."

Prosecutors believe that the father and son acted together.

We're told the taping of the Dr. Phil Show grew so intense that it's being aired in a special two-part episode on WDRB at 3:00 p.m. on Feb. 24 and 25.

Terry Zwicker described the taping as, "my opportunity to find out some kind of closure, some kind of happening -- and that was the job for me."

"It none benefits me," he said. "It none helps me, other than just getting a piece of closure, but it helps the world see that he was a good kid. He didn't deserve what he got by no means."

At the end of the Dr. Phil taping, does Terry Zwicker still believe Josh Young killed his son?